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915 clutch pedal hesitating when releasing
I have looked and looked but haven’t found anything like what mine is doing.
The cable is correctly adjusted. 1.2mm then attach cable adjust to 1mm, throw is right on 25mm + - .5mm usually within .2mm. I have run the cable all the way in the clevis and run it way out and still can adjust correctly. And total throw is adjusted with floor board stop. Fresh rebuilt trans. New flywheel, clutch, pressure plate, throw out bearing, bearing guide tube, release fork. All lubed at install. Problem is when I depress the clutch to shift and release it hesitates just a second when you lift your foot. It was worse with the cable out of the clevis more. With it all the way in at the clevis it is the best I have had it. A real head scratcher. |
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03-19-2022, 12:14 PM
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Join Date: Mar 2021
Location: SF Bay Area
Posts: 547
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I had something similar where i ran out of (new) cable to adjust at the clevis and at the transmission. Turned out it was the roll pin securing the clutch pedal to the shaft. It had partially disintegrated so it still worked but behaved like yours, until it failed.
Worth checking. |
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03-19-2022, 12:59 PM
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Weird thing is I can now adjust my clutch properly and it acts funny.
Before I switched transmissions it worked fine but very hard to adjust it correctly. |
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03-19-2022, 02:14 PM
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Check your pedal cluster for a worn roll pin, bad clutch pedal return spring, and worn out bushings.
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03-19-2022, 02:34 PM
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Cluster has been rebuilt.
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03-19-2022, 02:47 PM
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I removed the clutch pedal spring at the pedal cluster and the pedal is lightning quick now.
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03-19-2022, 06:43 PM
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Grappler
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Quote:
That's not the correct fix.
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Grappler Know Gi / No Gi 1976 RSR Backdate (Turbo 3.2) |
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03-20-2022, 08:54 AM
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Quote:
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03-20-2022, 10:50 AM
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Grappler
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That spring is important, I would not remove it.
It sounds like your cable isn't quite tight enough. I've seen several people adjust to factory specs and it still doesn't work quite right. I use factory specs to get it close but ultimately adjust by what works best. One way to shorten the cable is to cut off a few threads at the clevis end which will allow you to screw it in more. Once adjusted correctly the clutch pedal should be even with the brake pedal or very close. Even this isn't a "Porsche approved" fix but at least you wont be removing components like a major spring at the the pedal box. Also make sure you have the correct cable. Not sure what year 915 you have but the early ones without the Omega spring had cables of different lengths. Hope this helps.
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Grappler Know Gi / No Gi 1976 RSR Backdate (Turbo 3.2) |
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03-20-2022, 11:57 AM
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Already shortened the cable and it is screwed in as far as it will go. |
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03-20-2022, 12:00 PM
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Grappler
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I'm not sure which years, but the early cars didn't use an Omega spring, and these cars have a few different length cables.
If your car has the Omega spring the cables are all the same length.
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Grappler Know Gi / No Gi 1976 RSR Backdate (Turbo 3.2) |
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03-20-2022, 12:05 PM
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Helper spring, release bearing, release fork , release bearing guide tube, fresh rebuilt trans. New cable, rebuilt pedal cluster. All new and good. |
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03-20-2022, 12:47 PM
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the best would be..if you go under the trans.and take a picture of your clutch arm and e.t.c.
then we could probably see the problem Ivan
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1985 911 with original 502 191 miles...808 198 km "The difference between genius and stupidity is that, genius has its limits". Albert Einstein. |
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03-20-2022, 12:52 PM
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 Set 1.2. Adjust to 25.25mm throw at 1mm |
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03-20-2022, 01:06 PM
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RSR Backdate
